JP2892936B2 - Fertilizer structure of paddy field machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fertilizer structure in a paddy field working machine such as a rice transplanter or a direct sowing machine, in which a paste-like fertilizer is fed into a rice field as the machine body advances.

[0002]

2. Description of the Related Art In a rice transplanter which is an example of a paddy field working machine, for example, as disclosed in Japanese Utility Model Publication No. 63-49148, a float of a seedling planting device provided at a rear portion of the machine is provided with a plurality of rice planters. A number of pipe-shaped fertilizing nozzles (17 in FIG. 1 of the above-mentioned publication) (corresponding to a fertilizer supply unit) are fixed, and the fertilizing nozzle is extended from the rice field to a position at a set depth. Some fertilizers are configured to be fed from a rice field to a set depth.

In this case, a fertilizer tank (7 in FIG. 1 in the above publication) is provided on the fuselage side, and fertilizer from this fertilizer tank is passed through a fertilizer pipe (11, 13 in FIG. 1 in the above publication). Via a plurality of fertilizer pumps (1 in FIG.
2), and the fertilizer is supplied from each fertilizer pump to each fertilizing nozzle via a fertilizer hose (14, 16 in FIG. 1 of the above-mentioned publication).

[0004]

Since the fertilizer is distributed and supplied from the fertilizer tank to each of the fertilizing nozzles through the multiple pumps, when a few rows are planted along the ridge, unnecessary fertilizer pumps are used. It could not be stopped and there was a problem of manure runoff.

Therefore, as a first means for solving the above-mentioned drawbacks, it is conceivable that the multiple pump is constituted by a plurality of pumps which can be individually stopped and driven so that fractional planting is possible. However, there is an inconvenience that the cost increases with an increase in the number of parts such as pumps for each section and wirings and switches for them.

Therefore, as a second means for planting fractional rows using a small number of pumps, it is conceivable to distribute and supply fertilizer to two fertilizer supply sections with one pump. , Because it is a unit of two, for example,
In a six-row planting machine, four fractions can be planted without stopping the flow of fertilizer by stopping one pump. There is an inconvenience that it is not possible to plant only a single row and to plant five fractional rows without running down the fertilizer.

[0007] An object of the present invention is to enable the supply of fertilizer to be stopped only in the outermost one of the bodies, while having a structure in which fertilization is performed every two rows by one pump.

[0008]

The present invention is characterized by a plurality of fertilizer supply units capable of feeding a paste-like fertilizer to a position at a set depth from a rice field, and a fertilizer supply unit for supplying the fertilizer to the fertilizer supply unit. Along with a plurality of fertilizer pumps that can be driven independently and a fertilizer tank that stores paste-like fertilizer,
The fertilizer from each of the fertilizer pumps is configured to be able to be distributed and supplied to the fertilizer supply unit every two rows, and further, the fertilizer is supplied to the fertilizer supply unit in a route to the outermost fertilizer supply unit of the machine body. There is provided a switching valve that can be selected between a state and a state in which the supply of fertilizer to the fertilizer supply unit is shut off and returned to the upstream side of the flow path of the fertilizer pump.

[0009]

When the fertilizer pump is stopped, the supply of fertilizer to the two fertilizer supply units is stopped. For example, in the case of a six-row planting machine, when four fractions are planted, the outside of the machine is If one fertilizer pump is stopped, four fertilizers can be supplied.

[0010] In the case of planting five fractional rows, the switching valve provided in the path to the outermost fertilizer supply section of the machine is switched to a state in which the supply of fertilizer is cut off, so that the cut off fertilizer is removed. The fertilizer is returned to the upstream side of the flow path of the fertilizer pump via the return path, the supply of fertilizer to the outermost fertilizer supply unit is stopped, and five fertilizers can be supplied.

[0011]

As a result of the above construction, odd and even fractional plantings can be carried out using a small number of fertilizer pumps without causing the fertilizer to run off.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to a six-row riding type rice transplanter which is an example of a paddy working machine.

As shown in FIG. 1, a link mechanism 4 is provided at the rear of the body supported by the front wheel 1 and the rear wheel 2 so as to be able to move up and down by a hydraulic cylinder 3, and a seedling planting device 19 is mounted on the link mechanism 4. In connection, a riding type rice transplanter, which is an example of a paddy field working machine, is configured.

As shown in FIG. 2 and FIG.
Are a pair of planting cases 6 rotatably driven around the horizontal axis P1 of three planting transmission cases 8 (corresponding to the body fixing portion), and a pair of planting claws 7 provided at both ends of the planting case 6. , The seedling rest 5, the float 9, and the like, are configured in a six-row planting type. With the rotation of the planting case 6, the pair of planting claws 7 alternately take out the seedlings W from the seedling rest 5, and And plant it.

The riding type rice transplanter is provided with a fertilizer application structure for feeding the paste-like fertilizer into the rice field S. Next, the fertilizer application structure will be described.

As shown in FIG. 2, a groove plate 13 to be described later is used.
Is provided with a cylindrical fertilizer application pipe 14 (corresponding to a fertilizer supply unit) having an outer diameter smaller than the width of the fertilizer application pipe. A guide plate 16 that extends rearward of the fuselage is fixed to the lower end of 14. A connection fitting 18 is fixed to an upper part of the fertilizer application pipe 14.

A triangular grooving plate 13 having a predetermined width is fixed to the float 9 corresponding to each of the six planting strips, and a guide plate 16 at the lower end of the fertilizing pipe 14 is grooved. The ferrule is mounted on the extension 13a at the lower end of the plate 13 and the connection fitting 18 is connected to the upper portion of the grooved plate 13 with the screw 17 so that the fertilizing pipe 14 is positioned within the width of the rear portion of each grooved plate 13. Are linked. Fertilizer outlet 1 of each fertilizer application pipe 14
A flat pressing member 15 surrounding the upper body rear side of the upper part 4a and the right and left sides of the upper part is provided with a screw 17 on each float 9.
It is fixed at.

As shown in FIGS. 2 and 3, at the rear of the seedling rest 5, support brackets 28 are fixed to three planting transmission cases 8, and a cylindrical stainless steel support is provided over each support bracket 28. A pipe 23 is erected and connected, and both ends of the support pipe 23 are closed by support brackets 28. One fertilizer pipe 26 made of stainless steel is connected to the support pipe 23.
As shown in FIG. 1, a fertilizer hose 11 from a fertilizer tank 10 serving as a control step is connected to a lower end of the fertilizer tank 11.

As shown in FIG. 3 to FIG.
3, three plunger type fertilizer pumps 12 are fixed, and three communication pipes 27 (corresponding to communication paths) from the support pipes 23 are suction ports (not shown) of the three fertilizer pumps 12.
The hose 20 from each fertilizer pump 12 is bifurcated and connected to a pair of fertilizer application pipes 14 and 14.

With the above structure, the fertilizer from the fertilizer tank 10 is supplied to the fertilizer hose 11, the fertilizer pipe 26, the support pipe 2
The fertilizer pumps 12 are distributed and supplied to the three fertilizer pumps 12 inside and through the communication pipe 27. Each fertilizer pump 12 is driven as described later, and the fertilizer is supplied from each fertilizer pump 12 to the hose 20.
To the two fertilizer application pipes 14, 14.

As shown in FIG. 2 to FIG.
An operation arm 24 is swingably supported around a horizontal axis P2 of a bracket 23a fixed to the bracket 3, and the upper end of the operation arm 24 is positioned on the plunger 12a of the fertilizer pump 12. A pair of links 22 are supported by the operation arm 24 and the support pipe 23 so as to be vertically swingable, and the ends of the pair of links 22 are connected by pins. The connecting member 2 extends over both support shafts that support the planting claws 7 on the planting case 6.
5 is erected and connected, and an intermediate portion of the connecting member 25 and the tip of the link 22 are connected by a push-pull rod 21.

With the above structure, when one of the planting claws 7 takes out the seedling W from the seedling placing base 5, the two links 22 are in a horizontal posture. When the planting case 6 rotates counterclockwise in FIG. 4 while the body advances to the left in FIG. 4, the push / pull rod 21 is pulled toward the planting case 6, and the two links 22 face downward. The swing operation is performed, and the operation arm 24 starts swinging to the fertilizer pump 12 side. Thereby, the plunger 12 of the fertilizer pump 12 is
a is pushed, and the fertilizer starts to be sent out from the fertilizer application pipe 14. When one of the planting claws 7 holding the seedling W reaches the rice field S, the fertilizer has already been sent out linearly from the fertilizing pipe 14, and the seedling W is located near the center of the linear fertilizer.
Is planted.

As described above, when the planting case 6 is rotated once and the seedlings W are planted by the pair of planting claws 7, the plunger 12a of the fertilizer pump 12 is pushed twice in conjunction with this. Thus, the fertilizer is sent out from the fertilizing pipe 14 into the rice field S.

As shown in FIG. 5, in the middle of a hose 20 for forming a path to the fertilizer supply unit 14 on the left and right outermost sides of the body,
It is possible to switch between a state in which the fertilizer is supplied to the outermost fertilizer supply section 14 and a state in which the supply of the fertilizer is shut off and returned to the support pipe 23 on the side closer to the flow path than the fertilizer pump 12. A switching valve 29 is provided, and the switching valve 29 and the support pipe 23 are connected via a return pipe 30. Therefore, when planting all the strips,
As shown in, the fertilizer is supplied to the whole fertilizer supply unit 14, and
For example, when the leftmost one is planted and stopped, the supply of fertilizer to the corresponding fertilizer supply unit 14 can be cut off.

As shown in FIG. 6, the fertilizer tank 10 is a fertilizer tank that is provided with tank portions 10a, 10a on the left and right and also serves as a steering step. As shown in FIG. 1, the fertilizer supply port 10b is located at the front end of the fuselage so that the weight balance of the fuselage does not change significantly, and the fertilizer supply to the tank can be easily performed from the ridge. is there. Furthermore, both tank parts 10a, 10a are connected by a communication pipe 10c so that the supplied fertilizer is evenly distributed to the left and right tank parts 10a, 10a.

[Another Embodiment] As shown in FIG. 8, as a means for increasing the capacity of the fertilizer tank, a pair of left and right auxiliary wheels are provided at the front portion of the front wheel in consideration of the front-rear balance with the seedling planting device at the rear of the body. The fertilizer tanks 31, 31 may be provided so as to communicate with the fertilizer tank 10, which also serves as a control step.

A four-row or eight-row even-numbered riding type rice transplanter / planter, in which fertilizer is supplied every two rows, or fertilizer is applied on both sides every two rows and the center is solely fertilized with one row.5 The present invention can also be applied to an odd-numbered riding type rice transplanter / planter.

As shown in FIGS. 9 and 10, in a folding type eight-row riding type rice transplanter planting machine in which the seedling planting device 5 is a foldable type, the fertilizer tanks 1 disposed on the left and right sides of the front of the machine body.
Left and right fertilizer tank 1 so that 0,10 fertilizers are reduced evenly
After connecting 0,10 with one fertilizer hose 11a,
Separate fertilizer hoses 11b, 11b and support pipe 2
It is configured such that it can be distributed and supplied to the left and right fertilizers via the ferrules 3 and 23, respectively.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of the drawings]

FIG. 1 is an overall side view of a riding rice transplanter.

FIG. 2 is a side view of the seedling planting apparatus.

FIG. 3 is a rear view of the seedling planting apparatus.

FIG. 4 is a side view showing a support and drive structure of the fertilizer pump.

FIG. 5 is a schematic diagram showing a switching state of fertilizer application. (A) All-row planting state (b) A few-row planting state

FIG. 6 is a schematic plan view showing an arrangement state of a fertilizer tank, a fertilizer hose, and the like.

FIG. 7 is a rear view of a partly broken fertilizer tank.

FIG. 8 is a schematic plan view showing an arrangement state of a fertilizer tank, a fertilizer hose, and the like according to a second embodiment.

FIG. 9 is a plan view showing an arrangement state of a fertilizer tank, a fertilizer hose, and the like according to a third embodiment.

FIG. 10 is a schematic plan view showing the stored state of the fertilizer application.

[Explanation of symbols]

 Reference Signs List 10 fertilizer tank 12 fertilizer pump 14 fertilizer supply unit 29 switching valve S rice field

Claims (1)

(57) [Claims] A plurality of fertilizer supply units (1) capable of feeding paste-like fertilizer to a position at a set depth from a rice field (S).
4), a plurality of fertilizer pumps (12), each of which can independently drive a fertilizer to the fertilizer supply unit (14), and a fertilizer tank (10) for storing paste-like fertilizer, The fertilizer from the fertilizer pump (12) can be distributed and supplied to the fertilizer supply units (14), (14) in units of two rows, respectively. Further, during the route to the outermost fertilizer supply unit (14), Select between a state in which fertilizer is supplied to the fertilizer supply unit (14) and a state in which the supply of fertilizer to the fertilizer supply unit (14) is interrupted and returned to the upstream side of the flow path of the fertilizer pump (12). Fertilizer application structure of paddy working machine provided with possible switching valve (29).